You will get Senior Full-Stack Developer | Next.js, React, Node.js & AWS
Project details
I build fast, scalable, and modern web applications using Next.js, React, Node.js, and TypeScript. With 5+ years of experience and technical leadership background, I deliver high-quality solutions focused on performance, maintainability, and business growth.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Localization, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$600
|
Advanced
$1,800
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 5 | 10 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $200
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$100About Sergio
Senior Full-Stack Developer Next.js, React, Node.js, TypeScript,
Curridabat, Costa Rica - 3:45 pm local time
I am a Senior Full-Stack Developer with 5+ years of experience building scalable, high-performance web applications for startups, agencies, and enterprise clients. Specialized in Next.js, React, Node.js, TypeScript, HTML, SCSS, AWS, and Headless CMS architectures, I help businesses transform ideas into modern digital products that drive growth and deliver exceptional user experiences.
Throughout my career, I have successfully led projects from concept to production, managing both technical implementation and team coordination. My expertise includes architecting scalable frontend applications, developing secure backend services, integrating third-party platforms, and optimizing performance for mission-critical systems.
Key strengths include:
✅ Full-Stack Development (Next.js, React, Node.js, TypeScript)
✅ Frontend Architecture & Performance Optimization
✅ REST API Development & Integrations
✅ AWS Cloud Services & Serverless Solutions
✅ Java Spring Boot Backend Development
✅ Headless CMS & Modern Web Architectures
✅ HubSpot CMS & CRM Development
✅ Technical Leadership & Team Mentorship
✅ Code Reviews, Pull Requests & Development Best Practices
✅ Agile Project Management & Cross-Functional Collaboration
As a Technical Lead, I have managed and mentored development teams, coordinated project execution, conducted code reviews, and ensured the successful delivery of high-quality software solutions. I excel at bridging the gap between business requirements and technical execution, ensuring projects are delivered on time and aligned with strategic goals.
I also bring extensive experience with HubSpot CMS and CRM, helping companies streamline marketing and sales operations through workflow automation, lead management, custom integrations, analytics, email marketing, and content optimization.
Microsoft Cloud Certified and passionate about staying ahead of industry trends, I am committed to delivering clean, maintainable code and building long-term partnerships with clients who value quality, communication, and results.
Let's build something exceptional together.
Steps for completing your project
After purchasing the project, send requirements so Sergio can start the project.
Delivery time starts when Sergio receives requirements from you.
Sergio works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Review
Discuss project goals, features, and technical requirements.
Planning & Architecture
Define the solution, project structure, and development roadmap.